Difference between revisions of "February 10, 2020 - Resource meeting"
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===Correctors (21 pairs , down from 23 pairs)=== | ===Correctors (21 pairs , down from 23 pairs)=== | ||
| − | + | *Will re-use existing MBH (long Haimson), MHB (short Haimson), MHD (on A1 cube), and eliminate MAD in favor of another type | |
| − | + | *Total number of H/V pairs is 21 (goes down by 2 pair, so should free up 4 channels) | |
===Dipoles (2: same number)=== | ===Dipoles (2: same number)=== | ||
| − | + | *PO written for 1+1 new 15 deg dipole fits on 3" OD pipe (replaces existing similar MDS fits on 2.5" pipe) | |
| − | + | *500 keV spectrometer dipole (MBO) will either be re-used as-is, possibly modified for taller vacuum chamber aperture | |
===Solenoids (11: same number)=== | ===Solenoids (11: same number)=== | ||
| − | + | *Gun to Chopper region : retain two FG solenoids + upgrade the FH, FB, FQ with three new FX solenoids | |
| − | + | *Chopper : retain two FA solenoids captured to chopper cavities + upgrade the two FD solenoids with two new FY solenoids (TBD: one or two PS) | |
| − | + | *Chopper to Booster : upgrade FA, FL with two new FX solenoids | |
===Quadrupoles (6: same number)=== | ===Quadrupoles (6: same number)=== | ||
| − | + | *Replace existing 6 quads (types QW, QU) with two new triplets (3Q), under design now | |
| − | + | *If design is late or does not come to fruition, may retain the 6 quads we have now | |
| − | + | *Right now, retain one skew quad MQS0I07, but should be eliminated by improved Booster module | |
===Earth Coils (2: same number)=== | ===Earth Coils (2: same number)=== | ||
| − | + | *One coil across chopper | |
| − | + | *One coil across chopper-booster | |
| + | ===Wien Filters (2: same number, Vertical then Horizontal)=== | ||
| + | * PO written for 2+1 pairs of 200 keV coils to retrofit on dipole steel | ||
| + | * New electrodes under test at UITF | ||
| + | ===Viewer/Camera combos (13: same number)=== | ||
| + | * Same in each region, go figure | ||
| + | * YAG screens at TBD locations, metal markings on rear, metalized face for charge, Marcy getting bids from Radiabeam | ||
| + | ===BPM's (15, up from 11)=== | ||
| + | * Gun to Chopper : increase count by one, and we're thinking on a standardized 2.5" OD w/ Haimson for first three after gun | ||
| + | * Chopper to Booster : increase count by three, Phil is tallying available spare cans, need another BPM crate?!? :( | ||
| + | ===Harps (2, down from 3)=== | ||
| + | * Gun to Chopper - one harp, removed an unpowered harp) | ||
| + | * Spectrometer - retain harp | ||
| + | ===Current monitored apertures (8: same number)=== | ||
| + | * Retain two insertable Faraday cups (PCUP, FC1); retain same hardware crash inhibit function | ||
| + | * Retain some one spectrometer dump (DL) | ||
| + | * A1 = retain, but would like remote linear control (has manual linear control) | ||
| + | * A2 = retain as-is, PSS function | ||
| + | * MS = retain, improve linear bellows | ||
| + | * A3 = retain, as-is PSS function | ||
| + | * A4 = retain, as-is PSS function | ||
| + | ===Grounded apertures (4: same number)=== | ||
| + | * Chopping apertures A,B,C on improved linear bellows assembly, with new stepper controls | ||
| + | * Central plug | ||
| + | ===Cavity monitors (1: reduced by 1)=== | ||
| + | * Gun to chopper - Remove Brock cavity | ||
| + | * Chopper to booster - Retain YAO cavity | ||
| + | |||
| + | ===RF (same, w/o capture)=== | ||
| + | * Prebuncher - existing SS or new Cu cavity; will need new amplifier, evaluating in GPT then convert to gradient/Watts | ||
| + | * Choppers 1/2 - same, new spare amplifiers purchased already | ||
| + | * Buncher - retain | ||
| + | * Warm capture - remove | ||
| + | * SRF - replace 5+5 w/ 2+7 | ||
| + | |||
| + | ===PSS (same number)=== | ||
| + | * PSS kicker, retain - verify good for 200 keV at proposed location | ||
| + | * A3/A4 - retain as-is | ||
| + | * 500 keV dipole - modify limits for 200 + buncher keV inj seg mode only, and if dipole height increased | ||
| + | |||
| + | ===Vacuum valves (7, increased by 1)=== | ||
| + | *Gun to chopper - same three valves, but last viton valve VBV0I02 will become 2-3/4" all metal | ||
| + | *Chopper to booster - increase w/ new viton valve after chopper to improve vacuum isolation for venting chopper | ||
| + | *Spectrometer - retain valve | ||
| + | |||
| + | ===Vacuum ion pumps (17, reduce by 4)=== | ||
| + | *Gun to chopper - retain same number, using UHV supplies | ||
| + | *Chopping chamber - retain chopper cavities, reduce pump on chamber | ||
| + | *Chopper to booster - reduce by 4, should all be on capture | ||
| + | *Spectrometer - retain 1 | ||
== Bullets from last meeting... == | == Bullets from last meeting... == | ||
Revision as of 12:39, 10 February 2020
Announcements
- Mailing list launched => aipinj@jlab.org
- Latest layout update Friday Feb 10
Tally components by systems
Correctors (21 pairs , down from 23 pairs)
- Will re-use existing MBH (long Haimson), MHB (short Haimson), MHD (on A1 cube), and eliminate MAD in favor of another type
- Total number of H/V pairs is 21 (goes down by 2 pair, so should free up 4 channels)
Dipoles (2: same number)
- PO written for 1+1 new 15 deg dipole fits on 3" OD pipe (replaces existing similar MDS fits on 2.5" pipe)
- 500 keV spectrometer dipole (MBO) will either be re-used as-is, possibly modified for taller vacuum chamber aperture
Solenoids (11: same number)
- Gun to Chopper region : retain two FG solenoids + upgrade the FH, FB, FQ with three new FX solenoids
- Chopper : retain two FA solenoids captured to chopper cavities + upgrade the two FD solenoids with two new FY solenoids (TBD: one or two PS)
- Chopper to Booster : upgrade FA, FL with two new FX solenoids
Quadrupoles (6: same number)
- Replace existing 6 quads (types QW, QU) with two new triplets (3Q), under design now
- If design is late or does not come to fruition, may retain the 6 quads we have now
- Right now, retain one skew quad MQS0I07, but should be eliminated by improved Booster module
Earth Coils (2: same number)
- One coil across chopper
- One coil across chopper-booster
Wien Filters (2: same number, Vertical then Horizontal)
- PO written for 2+1 pairs of 200 keV coils to retrofit on dipole steel
- New electrodes under test at UITF
Viewer/Camera combos (13: same number)
- Same in each region, go figure
- YAG screens at TBD locations, metal markings on rear, metalized face for charge, Marcy getting bids from Radiabeam
BPM's (15, up from 11)
- Gun to Chopper : increase count by one, and we're thinking on a standardized 2.5" OD w/ Haimson for first three after gun
- Chopper to Booster : increase count by three, Phil is tallying available spare cans, need another BPM crate?!? :(
Harps (2, down from 3)
- Gun to Chopper - one harp, removed an unpowered harp)
- Spectrometer - retain harp
Current monitored apertures (8: same number)
- Retain two insertable Faraday cups (PCUP, FC1); retain same hardware crash inhibit function
- Retain some one spectrometer dump (DL)
- A1 = retain, but would like remote linear control (has manual linear control)
- A2 = retain as-is, PSS function
- MS = retain, improve linear bellows
- A3 = retain, as-is PSS function
- A4 = retain, as-is PSS function
Grounded apertures (4: same number)
- Chopping apertures A,B,C on improved linear bellows assembly, with new stepper controls
- Central plug
Cavity monitors (1: reduced by 1)
- Gun to chopper - Remove Brock cavity
- Chopper to booster - Retain YAO cavity
RF (same, w/o capture)
- Prebuncher - existing SS or new Cu cavity; will need new amplifier, evaluating in GPT then convert to gradient/Watts
- Choppers 1/2 - same, new spare amplifiers purchased already
- Buncher - retain
- Warm capture - remove
- SRF - replace 5+5 w/ 2+7
PSS (same number)
- PSS kicker, retain - verify good for 200 keV at proposed location
- A3/A4 - retain as-is
- 500 keV dipole - modify limits for 200 + buncher keV inj seg mode only, and if dipole height increased
Vacuum valves (7, increased by 1)
- Gun to chopper - same three valves, but last viton valve VBV0I02 will become 2-3/4" all metal
- Chopper to booster - increase w/ new viton valve after chopper to improve vacuum isolation for venting chopper
- Spectrometer - retain valve
Vacuum ion pumps (17, reduce by 4)
- Gun to chopper - retain same number, using UHV supplies
- Chopping chamber - retain chopper cavities, reduce pump on chamber
- Chopper to booster - reduce by 4, should all be on capture
- Spectrometer - retain 1
Bullets from last meeting...
- New 200kV small shed cathode electrode at machine shop (like electron at UITF)
- New gun 10" anode flange being designed to locate a steering coil closer to the gun
- Phil/Marcy starting to NEG coat vacuum chambers; need a 1kW sputtering PS that works (1 kV, 1 mA)
- PO for 200 kV injector solenoids written (delivery April - June)
- Shaun designed alignment fixture for new beam line solenoids
- PO for 200 kV Wien magnet coils written (delivery March)
- Success applying +/- 20kV to UITF Wien! Testing w/ better vacuum comes next...
- PO to be written for new 15 deg dipole next week
- Chase assigning new names for dipole and solenoids
- Starting to study which laser vacuum window to use 2-3/4" as-is, or 4-1/2"
- Curt waiting on kV spec for prebuncher @ 200 kV, for Watt in S.S. cavity
- Reza/Alicia/Dennis evaluating re-ordering of layout
- Looking at installing valve downstream of chopper #2 this down, possibly during fc#1 repair
- Gary Cheng inquiring about checking cryo lines between QCM and Booster
- 5D beam line will be removed
- Neil/Anthony working plan to build table to move QCM/Booster
ATLIS Tasks
AIPINJ
Non-AIPINJ
- New Gun2 loading chamber
- Placeholder for Tim Minga to test laser room smoke detector alarm to MCC/Guard
Quick links
Injector upgrade calendar
- Run (now - May 6)
- Phase 1 (May 6 - end of 2020)
- Run (Jan 2021 - Sep 13 2021)
- Phase 2 (Sep 13 - end of 2021)